He was the subject of various allegations in the 1990s. But now Michael Jackson has posthumously been accused of further inappropriate relations with children by a new complainant.

The unidentified woman - Jackson's first female complainant - has filed a damages lawsuit as 'Jane Doe' and says the Thriller singer 'sexually abused' her when she was 12 years old.

She also claims he paid her $900,000 'hush money' to deter her from speaking with the press.

Michael Jackson has been accused of a new abuse claim (Photo: Getty)

The woman filed the lawsuit as a Jane Doe, saying Michael started abusing her in 1986 when she and her mother had stopped by his Encino, California home as sightseers. According to the papers, Michael invited them into the house to see his 'candy area.' The alleged victim further claims Michael fondled her genitals and gave her 'movie kisses' that the docs describe as 'tongue kissing her mouth and body.' (Photo: www.splashnews.com)

In a bid to substantiate her claims, the woman - who is now in her 40s - has shared a number of gushing notes from the eccentric songwriter, who was once dubbed the King of Pop.

In one hand-written correspondence, the Thriller star said: "Your Valentine's picture was so original and sweet

"I love you sooo much also you're making me love you even more, the more I talk to you. I'm crazy about you. All my love Michael, the Monopoly King."

The woman filed the lawsuit as a Jane Doe, saying Michael started abusing her in 1986 when she and her mother had stopped by his Encino, California home as sightseers. According to the papers, Michael invited them into the house to see his 'candy area.' The alleged victim further claims Michael fondled her genitals and gave her 'movie kisses' that the docs describe as 'tongue kissing her mouth and body.' (Photo: www.splashnews.com)

The late King of Pop allegedly paid the 'victim' $900,000 in hush money (Photo: Getty)

A series of other notes make similar comments.

The alleged victim claims the abused happened in 1986 after she visited his Hayvenhurst mansion as a tourist, where she was accompanied by her mother.

She says the mistreatment continued until the age of fifteen.

Now she is suing for unspecified damages relating to emotional distress, negligence and more.

The Michael Jackson estate is yet to make a statement or respond to the allegations, which casts an astonishing new light on the bizarre world of the 400million-record selling megastar, who died of a prescription drugs overdose in 2009.

The alleged victim further claims Michael fondled her genitals and gave her 'movie kisses' that the docs describe as 'tongue kissing her mouth and body.' (Photo: www.splashnews.com)

The latest claim comes just months after Jackson's former doctor said Jackson became infatuated with his British god-daughter when she was just five years old.

The extraordinary claims were made in Conrad Murray's explosive book by the singer’s personal physician.

He added that by the time she was 12, the twisted Thriller star was so obsessed with the little girl that he was determined to marry her as soon as possible.

But he also fell for movie star Emma Watson when she was an 11-year-old Harry Potter actress – and announced that if he couldn’t have his first choice he’d wed her instead.